The chalk mill can grind the chalk into powder. According to different fineness requirements, you can choose a different chalk mill. For chalk powder below 600 mesh, you can use a Raymond mill; for chalk powder with 300-3000 mesh, you can use an ultra-fine mill; if you have higher requirements for the powder particle shape of the chalk powder, you can use a vertical mill .
Chalk, also known as white clay powder, is a fine deposit of calcium carbonate. It is formed by the accumulation of the remains of ancient creatures. White, soft, and widely distributed. Chalk generally refers to the stratum of the Cretaceous period distributed in Western Europe. As a mineral, chalk is generally used to make products such as chalk.
Chalk crushing and grinding process:
1. Crushing stage: The large piece of chalk is crushed by the crusher to the fineness of the feed material (15mm-50mm) that can enter the mill.
2. Grinding stage: Small pieces of chalk that meet the conditions for entering the mill are uniformly and quantitatively fed into the grinding chamber of the mill through the conveying and feeding system, and pulverized in the grinding cavity.
3. Classification stage: The ground material is classified by the classifier along with the system airflow. The unqualified powder is returned to the grinding cavity of the main engine to be ground again.
4. Powder collection stage: The powder that meets the fineness enters the powder collection system through the pipeline with the airflow, and the gas and powder are separated. The finished powder is sent to the finished product silo by the conveying device, and then is packaged uniformly.
Introduction of chalk mill:
1. Raymond mill
Raymond mill is a kind of chalk milling equipment with wide application and high milling efficiency on the market. Compared with other equipment, this equipment has the following advantages.
a. The structure is simple, the appearance is novel, the area is small, and the degree of automation is high, which not only reduces the labor intensity, but also saves money.
b. The quality is guaranteed. Important devices such as grinding rollers are made of very good materials, which greatly improves the overall wear resistance of the equipment and extends the service life of the equipment.
c. The complete set of performance is strong, the obtained chalk product has a uniform particle size and a high screening efficiency, which is not achieved by other milling equipment, and the environmental protection measures of the equipment are also very good.
d. It can work for a long time without any requirements on the working environment. It can work in a harsh environment and the grinding effect will not be affected in any way.
2. HGM ultrafine grinding mill
Advantage:
Higher output, lower energy consumption
The newly designed grinding curve of the grinding roller and ring further improves the grinding efficiency of the HGM ultra-fine mill. Under the same fineness and power, the production capacity is 40% higher than that of jet mills and stirring mills, the output is twice that of ball mills, and the energy consumption of the system is only 30% of that of jet mills.
150-3000 mesh adjustable fineness
The cage-type powder separator of HGM ultra-fine crusher adopts German technology, which effectively improves the precision of powder selection. In addition, according to the user's requirements for output, fineness and sieving rate, a multi-head cage type powder concentrator can be configured. The fineness of the product can be adjusted arbitrarily between 150-3000 mesh, and the one-time screening rate can reach d97≤5μm.
No rolling bearings and screws in the grinding chamber
There are no rolling bearings and screws in the cavity of the HGM ultra-fine mill. Users do not need to worry about damage to the bearings or seals, and there is no problem of machine damage due to loose screws. The lubrication device is installed outside the main shaft, which can realize external non-stop lubrication and continuous production for 24 hours.
Pulse dust collector dust removal makes the operation more environmentally friendly
HGM ultra-fine pulverizer is equipped with high-efficiency pulse dust collector, so there will be no dust pollution during the operation of the entire crushing system. Equipped with muffler and anechoic room to reduce noise. Production is organized in accordance with national environmental protection standards.
Advantage:
Higher yield, better quality
SBM specially designed a unique roller shell and liner grinding curve, which can avoid the problems of long material residence time, repeated grinding and high iron content in the grinding process of traditional mills. This design makes it easier to produce material layers, and one-time grinding can achieve high yields. It can greatly improve the working efficiency of the mill and improve the whiteness and cleanliness of the finished product.
More energy-efficient multi-head powder selection technology
SBM adopts PLC control system and multi-head powder selection technology in this vertical mill to completely solve the two major problems of "high-precision, accurate powder cutting diameter, and fast switching between different production requirements". The user can precisely control the working parameters of the equipment such as grinding pressure and speed. Compared with ordinary mills, the energy consumption of this mill can be reduced by 30%-50%.
Double limit technology, more stable operation
In the CLUM ultra-fine vertical mill, the contact point between the roller shell and the grinding disc liner adopts electronic limit technology and mechanical limit protection technology, which can avoid the destructive impact caused by machine vibration (such as grinding roller directly hitting the grinding disc) (such as grinding roller). Direct impact on the grinding disc) to ensure the stability of operation.
Reversible structure makes maintenance easier
In the design process of the CLUM ultra-fine vertical mill, SBM fully considered the possible maintenance problems of heavy grinding rollers, and finally developed a reversible structure. Through this structure and hydraulic adjustment system, the operator can conveniently and quickly move the grinding roller out of the machine body, inspect and replace the roller shell and liner, and perform other maintenance operations to reduce downtime losses.